Calorimetric determination of the magnetic phase diagram of underdoped ortho II YBa2Cu3O6.54 single crystals

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • C. Marcenat
  • A. Demuer
  • K. Beauvois
  • A. Grockowiak
  • R. Liang
  • W. Hardy
  • D. A. Bonn
  • T. Klein

Detail(s)

Original languageEnglish
Article number7927
Journal / PublicationNature Communications
Volume6
Publication statusPublished - 21 Aug 2015
Externally publishedYes

Link(s)

Abstract

The recent discovery of a charge order in underdoped YBa2Cu3Oy raised the question of the interplay between superconductivity and this competing phase. Understanding the normal state of high-temperature superconductors is now an essential step towards the description of the pairing mechanism in those materials and determining the upper critical field is therefore of fundamental importance. We present here a calorimetric determination of the field-temperature phase diagram in underdoped YBa2Cu3Oy single crystals. We show that the specific heat saturates in high magnetic fields. This saturation is consistent with a normal state without any significant superconducting contribution and a total Sommerfeld coefficient γN∼6.5±1.5 mJ mol-1K-2 putting strong constraints on the theoretical models for the Fermi surface reconstruction.

Research Area(s)

Bibliographic Note

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Citation Format(s)

Calorimetric determination of the magnetic phase diagram of underdoped ortho II YBa2Cu3O6.54 single crystals. / Marcenat, C.; Demuer, A.; Beauvois, K. et al.
In: Nature Communications, Vol. 6, 7927, 21.08.2015.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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